Buffing machine



Feb. 27, 1923.

E. R. M COY ET AL BUFFING MACHINE Filed Feb. 11, 1919 5 sheets-sheet, l

Feb. 27, 1923.

E. R. M COY ET AL BUFFING- MACHINE 1919 I3 sheets-sheet 2 Filed Feb. 11,

Feb. 27, 1923. 1,447,027

E. R. MCCOY ET AL BUFFING MACHINE F1Jed Feb. 11, 1919 5 sheets-sheet 3 Patented Feb. 27, 19 23..

UNl'TED stares PATENT OFFICE. I

EDWIN R. MCCOY AND JOSEPH HERBEBS, OF CINCINNATI, OHIO.

BUFJFIN'G. maonf mn.

Application filed February 11, 1919. Serial No. 276,401.

To all whom it may concern.

Be itknown that we, EDWIN R. MoCoY and JOSEPH HERBERS, both citizens of the United States, and residents of Cincinnati, Ohio (whose post-office address is 909 Sycamore Street, Cincinnati, Ohigg, vented an Improvement in chines, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

This invention relates to finishing machines for boots and shoes and is particularly concerned with machines for performing the finishing operations on the shank of a shoe after the heel has been at tached thereto and breasted. Usually this shank surface is convex while the heel breast surface is concave and if the heel is very high, as is usual on womens shoes, and the shank consequently is very deep, it is exceedingly diflicult to get at that part of the shank surface close to the heel breast. This diiiiculty is caused 'by the peculiar shape of the surface to be finished and the very narrow space limits within which the finishing tool must operate.

It is the chief object of the present invention to devise a machine with which the shank portion of a shoe can be quickly, conveniently and satisfactorily finished. To this end the invention provides a finishing tool constructed to operate in the acute angle formed between the heel breast and the shank surface and a novel mechanism which is operative to drive this tool While it works in the narrow space limits of the shank of a high heel shoe.

The nature of the invention will be readily understood from the following description illustrating the embodiment of the inventionat resent preferred and the novel features w1ll be particularly pointed out in the appended claims.

eferring now to the accompanying drawings,

I Figure 1 is a side elevation of the upper part of a machine equipped with a mechanism embodying the present invention;

Fig. 2 is a plan view of the machine shown in Fig. 1;

F i 3 is an elevation, partly in section, on t e line 33 of Fig. 1, looking in the direction of the arrows, of the finishing or bufiing mechanism per se, the bracket on which such mechanism is carried being omitted for the sake tration.

Fig. 4 is a cross the tool head;

Fig. 5 is a view of the tool;

Fig. 6 is a plan view, partly in cross splction, showing the tool operating on a s 0e; 7

Fig. 7 is a side elevation of the parts shown in Fig. 6; and

Fig. 8 is a detail showing the construction of the frame.

The mechanism shown in the different views is designed as an attachment for a buffing machine of the well known Naumkeag type. This mechanism comprises a frame 2, provided with split bearings 3-3 to receive bearing bushings 4: for a, shaft 5, a pulley 6 being mounted fast on this shaft. The frame is provided with two yokes, one

of clearness of illussectional view through acting as a brace and sometimes also as a support for a handle (not shown), this yoke being designated at 7, Fig. 3, and the other indicated at 8, Figs. vided with a shank or projection 9 that is supported in the forward end of a bracket 10 projecting from the frame ofthe machine. A set screw 11 secures the shank 9 in the bracket. This construction enables the operator to adjust the frame 2 about the axis of the shank 9 into any position most advantageous for operation on the work. A round belt 12 runs over the pulley 6 from a suitable driving pulley 13 on the main part of the machine.

The finishing tool consists of'a scouring or buffing disk 14 backed up by a yielding pad 15 which is secured to the flanged head 16 of a shaft 17 having 18 secured thereto. The shaft is mounted in a bushing 19 which is clamped in a split tool head 20 by means of a suitable bolt or screw 21, Fig. 5. This'tool head also is provided with a shank 22 that is mounted in a holder or bracket 23 which has a split part 24 to receive the shank, the split portions bein clamped on the shank by a screw 25. This% other split clamp portion 26 which is mounted on the projecting end of one of the bushings 4 and is cl mped thereon by a screw 27.

The driving connections between the shaft 5, and the pulley 18 comprises a pulley 28 secured to the end of the shaft 5 and a pair of idlers indicated. at 2.9 and 30, respectively,

1 and 2, being pro a grooved pulley racket also is provided with anwashers.

Fig. 1, both mounted to rotate on short stub shafts projecting from the opposite sides of the tool head 20, the idlers being held on these stub shafts by suitable screws and These pulleys and idlers support a belt 31 which transmits power from the pulley 28 to ,the pulley 18. A suitable oil or grease cup 32 supplies lubricant to oil ducts that lead the lubricant to the shaft 17 and the idlers 29 and 30. The 'belt 31 is maintained under tension by means of a spring 33 which is mounted in a socket drilled in the shank 22 and bears at one end against the bottom of this socket and" at opposite end against the bottom of the cavity in which the shank slides in the bracket 23. A pin (not shown) projects from the shank 22 into the split in the holder and acts as a feather or key to prevent the shank from turning around. This pin, however, may be dispensed with, if desired, to enable the tool holder to be turned into different positions and the binding screw 25 can then be set up to clamp the shank in its adjusted position. The bushing 19 not only affords a bearing for the shaft 17 but it limits the end play of this shaft and the pulley 18. It will be seen from an inspection of Fig. 4 that the front face of the pulley 18 is grooved to receive the flange 16 on the shaft 17 and also to receive a flange-like head 35 on the bushing 19. The shank of this bushing is securely clamped in the tool head 20 by the screw 21 and the head 35 lies between the bottom of the recess in the pulley 18 and the rear face of the flange 16, this flange being secured to the pulley by three screws. one of which is indicated at 36, Fig. 4. Consequently, the head 35 prevents any substantial endwise movement of the shaft 17 and pulley 18. The screws 36 secure the pad 15 to the front face of the pulley and the shaft 17 is drilled and tapped to receive a screw 37 having a very fiat head which secures the disk 14: against the face of.the yielding pad 15.

It will now be understood that the motion transmitted to the pulley 6 by the belt 12 is, in turn, transmitted through the shaft 5, pulley 28 and belt 31, to the pulley 18 where it drives the buffing disk 14. The peculiar supporting means enables this tool to be adjusted into different positions about axes at right angles to each other, one of these axes being that of the projection 9 and the other the axis of the shaft 5, this latter adjustment being afforded by the mounting of the bracket 26 on the bushing 4.

It will be evident from an inspection of Figs. 6 and 7 that the tool and its driving and supporting mechanism occupy very little space either longitudinally or laterally of the shoe when the shoe is in position for the operation of the tool thereon, and consequently this construction and the disk-like form of the tool enables the tool to enter deep shanks and to operate on those portions ofthe shank surface close to the heel breast face. The pad 15 usually ismade of felt orrubber so that it permits the scouring disk 14: to conform to the shape of the part on which it is operating, and the tool thus is enabled to finish those parts of the shank surface which the bufiing tools in present use are unable to reach. 1n the prior machines the large abrasive disk cannot get at that part of the shank lying close to the breast face of a concave heel breasted out with a knife of small radius. Furthermore, the shank for the pad is likely to strike the heel and prevent the abrasive disk from getting into the acute angle between the shank face and the breast face. The fact that the shank 22 of the tool head of the machine shown extends backwardly at an acute angle to the axis of rotation of the bufling tool leaves the tool out in an open and free position where the workman is afforded a clear view of the work while he presents the heel to the tool and gives him abundant clearance space in which to manipulate the shoe. At the same time the various adjustments above described enable the operator to position the tool in any mannerthatmay be required to facilitate his convenience in buffing different styles of work. A bufiing tool of the usual type may be placed on the end of the shaft 5 opposite. to that supporting the bracket 23, if desired, as shown at 38 in Fig. 3.

This is a particularly advantageous arrangement since most operators prefer to use the regular Naumkeag pad in scouring the greater part of the shank because the large pad works faster than the small one and requires less frequent renewal of the abrasive disk. After the greater part of the shank has been scoured on the large pad the shoe is transferred to the small tool provided by this invention to scour that portion of the shank that the large pad cannot operate upon. It will readily be seen that the tool provided by this invention is of particular utility in scouring the shank of a shoe having a very high heel which is breasted under. That is, the breast sur-' face makes an unusually acute angle with the surface'of the shank. As above stated, it is impossible in prior machines to buff the shanks of such shoes up to the junction of the shank surface with the heel breast, and this operation is made especially difiicult if the heel is breasted with a knife of small radius. The tool provided by this invention effectually solves this problem.

The pulleys guiding the round driving belt 12 enable the bufiing head to be oscillated or swung about the axis of the shank 9, as the operator may prefer.

What is claimed as new, is:

1. A shank bufiing machine comprising an abrading disk, a tool head supporting said disk for rotation, said head having a shank extending backwardly at an acute angle to the axis of rotation of said disk, and a belt driving means for said disk including idlers mounted on said head to guide the belt.

7 2. A shank finishing machine adapted to operate along the surface of the shank of a high heel shoe substantially at the junction of said shank with the heel breast between opposite breast corners, comprising a support of relatively small diameter and great length, a tool support mounted for rotation at the end of said support and at an acute angle with respect to the length thereof, a finishing tool, means for mounting said finishing tool on said tool support, a holder for said support permitting a sliding and rotative movement therein, means for clamping the support in any of its positions therein, whereby the finlshing tool may be adjusted into different planes, and means for rotating said finishing tool extending substantially parallel to said support.

3. A shank bufling machine comprising an abrading tool, a shaft supporting said tool, a pulley on said shaft, a tool head supporting said shaft for rotative movement, said head being provided with a shank extending backwardly at an acute angle to the axis of rotation of said tool, a bracket supporting said shank, a frame supporting said bracket, a shaft j ournaled in said frame, a pulley mounted on said shaft, a belt connecting said pulley with the pulley on said tool head, and idlers on said tool head guiding said belt.

4.-. A shank buffing machine comprising an abrading tool, a shaft supporting said tool, a pulley on said shaft, a tool head supporting said shaft for rotative movement, said head bein provided with a shank extending backward y at an acute angle to the axis of rotation of said tool, a bracket supporting said shank, a frame supporting said bracket, a shaft journaled in said frame, a pulley mounted on said shaft, a belt connecting said pulley with the pulley on said tool head, and idlers on said tool head guiding said belt, and ielding means associated with the tool head shaft for maintaining a tension on said belt.

5. A shank bufling machine comprising an abrading tool, a shaft supporting said tool, a pulley on said shaft, a tool head supporting sai shaft for rotative movement, said head being provided with a shank extending backwardly at an acute angle to the axis of rotation of said tool, a bracket supporting said shank, a frame supporting said bracket for angular adjustment thereon, a

of said support shaft supported in said frame, a pulley mounted on said shaft, a belt connecting said pulley with the pulley on said tool head, and means supporting said frame for adjustment about an axis transverse to the axis on which said bracket is adjustable on said frame.

6. A shank finishing machine comprising a tool head, a bushing secured in said head, a shaft rotatable in said bushing, a pulley into which said bushing extends, one face of said pulle being recessed, and said bushing and sha t each having flange-like heads located in said recess, the head on said bushing lying between the pulley and the head on said shaft, a pad, and screws securing both said pad and the head on said shaft to said pulley.

7. In ashank finishing machine adapted to operate along the surface of the shank of a high heel shoe substantially at the junction of said shank with the heel breast, including a support, a pulley having one face thereof in engagement with the support and provided with a circular chamber on the face remote from the support, a bushing extending through the pulley and support and being non-rotatable with respect to the support, a flange-like head on said bushing at the end remote from the support, said flange-like head seating in the circular chamber in the pulley, whereby the pulley is rotatably mounted on the bushing and prevented from longitudinal movement with respect thereto, a shaft rotatably mounted in the bushing, means for attaching the ulley to the shaft and a scouring or bu ng disc secured to said attaching means.

8. A shank bufling machine comprising a shaft, a tool head supporting said shaft, said head being provided with a shank, a bracket adj ustably supporting and clamping said shank in position, a frame supporting said bracket, a shaft journalled in sa1d frame and making an angle with the first shaft, means carried by this latter shaft to rotate the first said shaft, an abrading tool carried by the first said shaft, the first said shaft, tool head, bracket and abrading tool being adapted to enter the angle-between the heel breast shank and the heel breast of a shoe.

In testimony whereof, we have signed our names to this specification, in the presence of two subscribing witnesses.

EDWIN R. MoCOY. JOSEPH HERBERS.

Witnesses: I

CLARENCE M. SMITH, L. L. 'LasLm. 

